Madonna has ruled out a gruelling desert challenge in Morocco - her publicist has denied reports she'll be taking part in 2010's Marathon des Sables.
Tabloid reports suggested the pop superstar was in training for the six-day run through the Sahara Desert, dubbed the toughest race on earth, but her longtime aide Liz Rosenberg insists the story is just another false piece of gossip.
She says, "It's not true."
The epic trek is 156 miles long, takes six days to complete, and is the equivalent of six marathons. It takes place every spring.